"No one steals our clients, we give them away". This was advice given to me years ago by a business man I knew. I still forget that some times.
I work in an area where we do NOT use Buyer Agreement contracts. The very few I have lost over the past 10 years were because I gave them away.
I forgot to get back to them or got too busy and just did not perform, or perhaps did not send enough mail to them. When I lose one, this quote always comes back to me.Fortunately for me its not often, but it still stings.